Today we’re featuring the hair tool that revolutionized woman hairstyles in the 1990s, the Topsy Tail. The productThe Topsy Tail is a small plastic hair tool that flips a pony tail, or a section of hair, inside out. A simple search on Instagram of the hashtag #topsytail will lead you to dozens of hairstyles you can create with the hair tool. Prior to creating the Topsy Tail, Edmark had been working as a marketing executive for the International Business Machines corporation for several years. She thought other women might appreciate a hair accessory that would allow them to more easily create intricate hairstyles, according the Lemelson MIT website.